Folding box.



J. R. MYERS.

FOLDING. BOX.

APPLICATION FILED NOV. 10, 1910.

Patented Mar. 28, 1911.

2 SHEETSBHEET 1.

men.

J. R. Mums; FOLDING BOX.

APPLICATION FILED NOV.10,-1910.

Patented Mar. 28, 1911.

2 SHEETS-SHEET 2.

Wrw m w m M m .A

Wings UNITED STATES. PATENT OFFICE.

JOSEPH a. MYERS, or ceramic, ILLINOIS.

Be it known that I, JOSEPH R. MYERS, a tening means of any character.Furthercitizen of the United States, residing at more, the interrelationof the inturned cor- Chicago, in the county of Cook and State of nerfolds is so effected as to impart to each Illinois, have inventedcertain new and usecorner great strength to resist crushing fulImprovements in Folding Boxes, of strain, and also great resistance toany outwhich the following is a specification. ward or bursting pressureinteriorly exerted My inverition relates to improvements in upon the boxand tending to flatten the secf paper boxes, and has for its generalobjects tions back into their original, blank form. to provide for theconstruction of such boxes My invention maybe embodied in many 7 "i witha minimum amount of material for a specifically different forms and theinterregiven size of package and to provide a boxlation of the essentialparts may be efl'ected wherein the top and bottom sections coopinvarious ways, and'for the purpose of full erate when assembled mutuallyto maintain disclosure of these facts, I have specifically the edgewalls of each section in proper posiillustrated in the drawings severalforms of t-ion, lnterlocked against spreading, and construction, allembodying the broader feamutually to stiflen or reinforce the assemturesof my invention. bled structure. p In the drawings, Figure 1 isa-perspective In general, my invention contemplates the view, with partsbroken away, showing a 7 employment of two .main sections respeccompletereceptacle constructed inaccordtively to constitute the top and bottommemance with my vinvention; Fig. 2 is a perbers of a complete box, eachsection formed 'spective detail of corner fragments of two i of a blank,no part of which extends beyond box sections partially assembled; Figs.3, such a rectangle as is necessary for the forand 4, are diagrammaticviews, illustrating mationof the planar portion and the edge differentmodes'of assemblage in cross 'secwalls of a receptacle section, so thatno tion Fig.5 is a plan View of a bottom blank waste of material isincurred incident to for a box shown in Fig. 1.; Fig. 6 shows a theformation of locking elements on the specifically different blank toprovidev blank, or otherwise. doubled corner folds Fig. 7 isa similarFurther, my invention contemplates the view to Fig. 2 of cornerfragments of box folding of the blanks in fashion to provide sectionsemploying such doubled corner in each section a planar area or body toconfolds; F ig. 8 is asection on line 88 of stitute the top or bottomproper of the box; Fig. 7; Fig. 9 is a section on line, 99 of to providethe appropriate edge walls to 'Fig. 8; Fig. 10 is a-section on l1nel0109 stand at right angles to said body; and to of Fig. 9.- p provideat the corners inturned, triangular First, specifically to describe-theembodifolds, tending, when theedge walls are set ment ofmy inventionshown in Figs. 1 to 5, up, normally to stand in position bisecting AandA represent'respectively the bottom the right angle formed by themeeting edge and top sections of the box. Each is formed walls of thesection. The media-n line of from a blank, generally as indicated inFig. each such fold along which it is creased, 6, the blanks beingsubstantial duplicates. thgrefore; Stands at approximately 45- to Itwill be understood,of course, that in comeach ofthe three meetingsurfaces constimercial practice slight allowance for thicktuting thecorner of the box section. ness of material may be mad in the dimen-Further, my invention contemplates the sions' of parts'of the-blanksproperly to fit interconnection of the corner foldsof the overlappingparts together, but this is so top and bottom sections, respectively, muwell understood in the art that for brev ty tually to maintain the edgewalls of both I will hereafter neglect such slight variasections intheir elevated or functional potions and consider such allowances alwaysto sition when the sections are assembled, therebe made where necessary,in 'partsf'which I by toconstitute of the two sections',neither willterm vduplicates. The blank A is su1t-, of which need provide means forself-supably attenuated on lines'for foldlng or creasport of its edgewalls,;a complete receptacle ing to present the planar portion or bodya, whereof the edge walls are mutually susend walls e, side Walls 8,and, between the romaine BOX.

To all whomit may concern:

tained through the interlocking cooperation of the corner folds of theopposing sections I Specification of Letters Patent. Patented BIar. 2S,1911. Application filed November 10, 1910.]

Seriai No.'591,710.

without the employment of extraneous fasproximate edges of the 'wallsintegralj webs w to be-developed into corner folds. Each the fold m maybe cut clear web, w, of the blank is cut away on a trans- Verse diagonalline 25, which connects the outer corners of side-walls, and the web iscreased on its axial diagonal or median line m, so as to fold inwardly.Thus, each web when set up constitutes a corner fold f which presentstwo triangular legs, which I will respectively term the endleg, awn-andthe side leg, accordingly-as they adjoin the end wall, 6, and the sidewall, 8, of the section. For ease in manipulating the blank, the innerend of through the material as indicated at Z.

It will be apparent that whenthe blank is folded on the crease linesindicated in Fig. 5 (creaseson the exterior of the bottom beingindicated in dotted lines and the interior. corner creases edge wallswill stand at right angles to the body a, and meet at the corner of thesec-- tion, and the folds 7 will be inturned each.

to stand at approximately. an angle of to both the side and end walls,and with its median crease-line mat an ang to the body a," the point pof. each fold, formed by the juncture of the median line m with the cutedge 25 standing midway of the depth of the edge walls. The section A issimilarly constructed, parts thereof being designated by the characterapplied to see; by the expdnent prime It will be noted that when asingle blank is thus folded no means are provided therein to maintainthe parts in their work- I ing position or to prevent complete orpartial return of the blank members to unfolded ororiginal position. Inthe formation of a receptacle from two such blanks, however, theinturned corner folds ff and f of opposite sections, are capable omutual coaction to prevent the sides and ends of either-blank fromspreading outwardly, and to hold the sections together in proper funcetional relation. This coaction between the in various ways. For manypurposes it is preferablethat the end walls of one section and the sidewalls of the other'section be positioned exteriorly,

but if desired such assemblage may be made that both the end and sidewalls of'either section may be exteriorly positioned, the walls of theother member being embraced within them. Briefly, the relation of thewalls first mentioned may .be secured by arranging the legs of thecorner folds 'of one .sectionto alternate with the legs of thecorresponding folds of the other section, or

otherwise stated, by straddling the legs ofeach corner fold of onesection across one leg only of the corresponding fold of the oppositesection. The arrangement with all of the walls of 'one section standingexte- .riorly may be secured by positioning the corner folds of thatsection to be embraced L posing corner the contiguous endand In theconstruction shown 1n Fig. 1, the

and the end on in full lines), its

' ing on the opposite characteristics, a bility to be assembled andknocked down .a

esaoit.

sidewalls s of the top section, walls 6 of the bottom section areexteriorly presented, and in Fig. 2 is shown the interrelation of thecorner folds roductive of such arrangement. In such View, observed thatthe bottom fold of bottom section A: straddles only the side leg y ofthe it will be corner fold of the top section A, while said fold f ofthe top section straddles the end leg as of the coacting fold f. Inpractically assembling two blanks in this manner, the desiredinterrelation may facilelfy be secured by superposing end member 6 o thetop section-on end member e of the bottom section, raising the end walle of said bottom'blank part way toward the vertical position, and thenpressing the side walls 8 of the bottom section inwardly toward verticalposition. As the sides move inward, pressure 'of the leg m of eachaffected corner fold f against the opposing leg a2,-serves to draw theside walls s of the top section inward after the side walls of thebottom section A, and to throw the side legs 31 of each of the afl ectedfolds of the top section A into the angle between the legs a: and y of[the corresponding fold f of the bottom section. Assemblage of the boxis then completed by workend in the same general fashion. Obviously,when the remote ends are brought close together, theside walls of thepartly-assembled sections all stand in. substantially raised position,and the remaining end members are easily brought together in properrelation by pressingin the end wall e of the bottom section A,'socausing legs'y' of the affected foldsof the top section to press uponthe legs y .of the opposing folds of the bottom section, so raising'theend wall 6 of the bottom section with its fold-legs m embraced in theangle between legs w and y of the topsection. It will be obvious thatwhen the box is fully closed and the opposing corner folds f and f arefully interlocked, the free or and t of each fold will substantiallycoin- .cide with the median line on or m constithe crease-edge of theopposingfold, 7

ds meeting tuting the points 72 and p of the two f0 or coinciding. Theresultant few, of which are. capalarge' number of times withoutdeteriorm .tion; absence of projecting partsor tabs ofany description;easy restoration to flat blank form for storage; :and great strengthteriorly applied crus'shing strain when assembled. 'Touchin the matterofstrength, it will be observe that the interlock ar- -rangement with theplies ofthe folds altercut edge 17' box has many advantageous I toresist internally applied pressure or up nating as described makes itpractically impossible for the edge walls to spread at'the corners underinternal pressure without rending thematerial apart, because not only dothe folds appurtenant to each exterior wall point inwardly behind the.corresponding wall of the other section, at an angle of 45, but,further, each fold appurtenant to an exterior side wall embraces the endleg-of the cooperating fold of the other section.- Furthermore, it willbe observed that the interlocked, infolded corners constitute strongtrusslike struts or pillars extending in four-fold thickness from the'top plane to the bottom plane of the box, efie'ctually to resistcrushing strains upon the receptacle. I

l/Vhile-I have specifically'described, the arrangement indicated inFigs. 1, 2, and 3, wherein the end walls e of the bottom section A andthe side walls 8' of the top. section Aare exteriorly positioned, itwill be apparent that such arrangement may be reversed, asdiagrammatically illustrated in Fig. 4, the end walls 6' of the topsection A and the side walls 8 of the bottom section A beingrespectively exteriorly positioned.

As a refinement of my invention, particularly advantageous where maximumstrength is desired, I find it practical to increase the strength ofeach corner fold-without the use of any extraneous part by the form ofconstruction illustrated in Figs. 6 to 10. In such embodiment of theinvention, I use blanks as shown at A Fig. 6, instead of cutting awaythe corner web of each blank on its trans. verse diagonal t, I fold thesquare web w along its diagonal t as shown in the lower right corner ofFig. 6, thereby to double the material to be incorporated into thecorner fold F. The blank with its corners thus double may be employed inany of the arrangements shown in Figs. 3, 4, and 5, the arrangementindicated in Figs. 7 to 10 corresponding with that shown in Figs. 2 and3 of the views heretofore described. Like parts are indicated by thesame characters used in Figs. 1 to 5, but with the exponent 2;

The susceptibility of my invention to em bodiment in different forms isherein shown, and in any of its embodiments illustrated, it provides acheap, strong, durable, and easily manipulated construction, but it willbe 'uncorner fold derstood that by such showing of-several embodimentsof my invention, I do not intend'to limit its application to the fewspecific forms shown, but that to the contrary, many other changes mightbe made in the embodiment of the invention without departure from itsspirit and within the scope of the appended claims.

WVhat I claim is:

l. A paper box comprising top and bottom sections providing atcorresponding cor ners inturned interengaging corner folds, each foldhaving its two legs straddling one leg of the corresponding fold of theother section.

2. A paper box consisting of a top section and a bottom section, eachhaving in an integral structure a body, .an end wall, a side wall, and acorner web inturned to constitute a corner fold having its fold edgelying in an axial diagonal of the web, and its free edge not extendingbeyond the transverse diagonalof said web, said corner. folds ofopposite sections interengaging with the folded edge of each foldstraddling the free edge of one leg of the opposite fold.

-3. A paper box consisting of a top-section and a bottom section, eachhaving in an'integral structure a body, wall, and a square corner webfolded upon itself on its transverse diagonal and folded inwardly on itsaxial diagonal to form a presenting opposing triangular legs each ofdouble thickness, each said corner fold of a box section interengagingwith the opposite corner fold of the other box section to straddle oneleg of said opposite corner fold and to have one of its legs strad dledby said opposite corner fold.

4. A paper box consisting of a top section and a bottom section, eachhaving in an integral structure a body, an end wall, a side wall, and acorner web, the corner webs of the two sections of the boxbeingduplicates, each constructed and arranged to straddle one leg of thecorresponding web of the op-v posite section.

In testimony whereof I hereunto set my hand in the presence of twowitnesses.

. JOSEPH R. MYERS.

In the presence of- W. LINN ALLEN, MARY F. ALLEN. c

an end wall, a side

